baber/WOPTO huggingface dataset:
Patent KR-20030054041-A (KR)
Title: Device for transmitting data and liquid crystal display using the same
Inventor: JUNG DONG IL
IPC: G09G3/36
Filed: 2001-12-24
Abstract: PURPOSE: A data transmission device and an LCD using the same are provided to perform freely an interfacing operation between data transmission ports by controlling remotely a transmission order. CONSTITUTION: A data transmission device includes a serial/parallel converter, a data divider, a data transmission portion(34), a data reception portion, and a data transmission control portion. The serial/parallel converter is used for converting inputted data to parallel data. The data divider is used for dividing the parallel data into odd data and even data. The data transmission portion transmits the divided odd data and the divided even data. The data reception portion receives and stores the divided odd data and the divided even data from the data transmission portion. The data transmission control portion controls a transmission order of the divided odd data and the divided even data.
Patent KR-20030055782-A (KR)
Title: Hinge structure for plane-type display device
Inventor: KIM HONG GI
IPC: G06F1/16
Filed: 2001-12-27
Abstract: PURPOSE: A hinge structure of a flat-panel image display device is provided to easily and uniformly divide the force applied to both ends, and to remove the difficulty of a manufacturing process by reducing a number of washers formed a surface between a fixing part and a rotation part. CONSTITUTION: A hinge axis(30) is a rotation center axis installed and inserted into a fixed plate(10) and rotating plates(20a,20b), includes a head part(31) larger than an axis diameter at one end, and includes a connection part at other end. A fixing part(70) adjusts the tightness of the hinge axis(30) by inserting into other end of the hinge axis(30). A projected washer(24) forms a friction surface with the fixing plate(10) by projecting from an inner surface of the rotating plates(20a,20b) as one body.
Patent KR-20030057896-A (KR)
Title: Method of manufacturing a flash memory device
Inventor: LEE DONG GI
IPC: H01L21/8247
Filed: 2001-12-29
Abstract: PURPOSE: A method for manufacturing a flash memory device is provided to be capable of preventing the under-cut generated due to the topology between a cell word line and a peripheral word line by selectively patterning the third polysilicon layer alone for simultaneously forming the cell word line and the peripheral word line. CONSTITUTION: A stack gate structure of a floating gate(43) and a control gate(45), and a gate oxide layer(48) are formed at a cell region and a peripheral region, respectively. The third polysilicon layer is formed on the entire surface of the resultant structure. A photoresist pattern is formed on the third polysilicon layer. Then, a cell word line pattern and a peripheral word line pattern are formed by selectively patterning the third polysilicon layer using the photoresist pattern as an etching mask. After removing the photoresist pattern, a cell word line(495C) and a peripheral word line(495P) are simultaneously formed by transforming the third polysilicon layer of the cell and peripheral word line pattern into a titanium silicide layer.
Patent KR-20030059456-A (KR)
Title: Method for forming metal line in semiconductor device
Inventor: KO CHANG JIN
IPC: H01L21/28
Filed: 2001-12-29
Abstract: PURPOSE: A method for forming a metal interconnection of a semiconductor device is provided to be capable of improving electro migration and stress migration by implanting titanium ions into a copper film. CONSTITUTION: An insulating layer(40) is formed on a semiconductor substrate(10) having a lower metal line(20). A via hole and a trench are formed by selectively etching the insulating layer. A barrier layer(70a) and a copper film are sequentially formed on the insulating layer including the via hole and the trench. Titanium ions are implanted into the copper film and annealed. By selectively etching the copper film, a copper alloy interconnection(80a) is then formed. Then, a diffusion barrier layer(90) is formed on the resultant structure.
Patent KR-20010073180-A (KR)
Title: 중합화 반응시 매우 빠른 개시제의 지속적인 주입방법
IPC: C08F2/00
Filed: 1999-09-10
Abstract: 본 발명은 과산화물이 필수적으로 중합화 온도에서 0.05시간 부터 1.0시간의 반감기를 갖는 중합화 방법에 사용된 모든 유기 과산화물의 중합화 혼합물에 주입되는 방법에 관한 것이다.  상기 과산화물의 주입은 중합화 율의 정확한 조절을 허용하고 방법은 낮은 잔류 과산화물의 수준의 중합체를 만들 것이다.
Patent KR-20010106518-A (KR)
Title: Hovercraft
IPC: B60V1/14
Filed: 1998-10-16
Abstract: The invention relates to a hovercraft, comprising at least one fan for producing an air cushion, and at least one thrust unit, which acts on the top surface (4) of the craft and which is used to propel it and/or to control its direction. Both the fan and the thrust unit have at least one airscrew that is driven by means of a motor (5, 6, 21) and generates an air current. The motor takes the form of an electromotor (5, 6, 21) located directly on the airscrew. At least one central energy generat or (7), which supplies the electromotor (E1, E2, A) with driving energy via an energy line (5a, 6a, 21a), is provided in order to generate th e electrical driving energy required by said electromotor (E1, E2, A).
Patent KR-20010080264-A (KR)
IPC: H05K3/02
Filed: 2000-08-10
Abstract: 캐리어 박과 동박과의 접합 계면에 유기계 재료를 사용한 캐리어 박 부착 전해 동박으로서, 전해 동박층을 미세 동 입자만으로 형성한 경우의, 접합 계면에서의 캐리어 박과 미세 동 입자만으로 구성된 동박층과의 박리를 안정화시키는 것을 목적으로 한다. 이 목적을 달성하기 위하여, (1) 접합 계면층 위에 배리어 동층을 형성하고, 그 배리어 동층 위에 미세 동 입자층을 형성한다. (2) 미세 동 입자층 위에 행하는 방청처리를 석출 전위가 -900mV(AgCl 2 /Ag참조전극을 사용한 경우의 값)보다 높은 단일 금속 또는 합금조성의 도금욕을 사용하여 행한다. (3) 상기 (1) 및 (2)의 수법을 조합한 캐리어 박 부착 전해 동박을 사용하는 것이다.
Patent KR-20010099801-A (KR)
IPC: G02B6/293
Filed: 2000-09-15
Abstract: 파장 분할 멀티플렉서/디멀티플렉서(WDM)는 다수의 협대역 영차(zeroth order) 공진 격자 필터(10a-10e)를 구비하여 매우 근접한 채널 간격을 갖는 다중 파장들을 멀티플렉싱 또는 디멀티플렉싱 시킨다. 일 실시예에서, 다수의 필터(10a-10e)는 1개의 블럭(20)에서 평행하며 다수의 이산 주파수 채널에 대한 신호들을 반사하도록 진행축에 일정 각도로 어셈블되어 있다. 상기 블럭 공간 물질(21)은 유체 또는 고체이다. 다른 실시예에서, 공진 격자 필터(10f-10g)의 각도 방향은 다수의 이산 주파수 채널에 대하여 반사된 신호들을 제공하도록 약간씩 수정되어 있다. 채널간의 혼선은 각 신호를 3번 반사시킴으로서 감소될 수 있다. 각 필터들은 바이너리 구조 또는 사인파 격자(16)이며 박막 기술을 사용하여 만들어진다.
Patent KR-20010101674-A (KR)
IPC: C07D263/64
Filed: 2000-01-15
Abstract: 본원 명세서에는 화학식 2의 화합물을 화학식 3의 아미노페놀 화합물과 반응시켜 화학식 5의 화합물을 수득하는 제1단계와 화학식 5의 화합물을 강염기와 반응시켜 화학식 1의 화합물을 수득하는 제2단계를 포함하는 2단계 공정(a) 또는 
     화학식 2의 화합물을 화학식 3의 아미노 화합물과 반응시켜 화학식 4의 중간체 화합물을 수득하는 제1단계, 당해 화합물을 폐환 반응시켜 화학식 5의 화합물을 수득하는 제2단계 및 화학식 5의 화합물을 강염기와 반응시켜 화학식 1의 화합물을 수득하는 제3단계를 포함하는 3단계 공정(b)을 포함하는, 화학식 1의 4,4'-비스(2-벤즈옥사졸릴)스틸벤 화합물을 저비용으로 간단히 제조하는 방법이 기재되어 있다. 
     화학식 1 
     
       
     
     화학식 2 
     
       
     
     화학식 3 
     
       
     
     화학식 4 
     
       
     
     화학식 5 
     
       
     
     위의 화학식 1, 3, 4 및 5에서, 
     R 1 은 수소, C 1 -C 8 알킬, -CO 2 R 2 , -NHCOR 2 또는 -OR 2 이고, 
     R 2 는 C 1 -C 4 알킬이다. 
     본 발명에 따라 제조된 스틸벤 화합물은 중합체성 물질, 특히 폴리에틸렌 테레프탈레이트(PET)에 사용된다.
Patent KR-20020012157-A (KR)
Title: Speech synthesizer based on variable rate speech coding
IPC: G10L19/18
Filed: 2000-02-04
Abstract: An apparatus and method for speech synthesis based on variable rate vocoding is presented. An input speech signal is encoded by a  variable rate vocoder (202), and the parameters of the speech signal are stored in memory. To synthesize speech, a variable rate decoder (208) decodes the parameters to produce speech samples. A codec (210) converts the speech samples from a digital signal to an analog signal, which is broadcast through a speaker (212).
Patent KR-20010102497-A (KR)
Title: 비동기식 ｃｄｍａ 시스템의 핸드오프 제어
IPC: H04W56/00
Filed: 2000-03-24
Abstract: 기지국이 각 시간에 서로 정렬되지 않은 CDMA 시스템에 있어서, 핸드오프 프로세스가 프레임 정렬을 하도록 함으로써 핸드오프를 수행한다.     예를 들면, 프레임 정렬은 선택된 세트의 사용을 통하여 수행될 수 있거나, 외부 소스를 기준하지 않고 원격장치를 정렬시킬 수 있다.     또한, 이웃 리스트가 추가 엔트리에 포함될 수 있다.
Patent KR-20010102523-A (KR)
IPC: G02B27/58
Filed: 1999-06-30
Abstract: 사이드 로브와 그의 구성요소가 초해상되어진 빛 스폿으로부터 제거되는 광학 장치로, 상기 초해상 이미지는 필요에 따라 보통 해상 이미지로 및 반대로 용이하게 전기적으로 변경할 수 있다. 상기 광학 장치는 투입 빛의 검파 부품에 의해 메인 로브와 사이드 로브를 포함하는 초해상 이미지를 발생하기 위해서 투입 빛을 집중하기 위한 랜즈 시스템과 투입 빛 생성 수단을 구비한다. 추가로 상기 광학 장치는 편광 선택이 가능한 방법을 통해 메인 로브의 편광 벡터와 구별될 사이드 로브의 편광 벡터를 인가하기 위한 편광 벡터 검파 수단과 편광 선택이 메인 로브의 편광 벡터를 선택하므로써 사이드 로브 또는 그의 구성요소를 제거하기 위한 편광 선택 수단을 구비한다.
Patent KR-20020029324-A (KR)
Title: 차량수리장치
IPC: B21D1/12
Filed: 2001-02-09
Abstract: 본 발명은 안전하고 용이하게 손상부를 소정의 위치로 끄집어 낼 수 있는 차량수리장치를 제공하는 것을 목적으로 한다. 패널면의 손상부를 정규의 위치로 끄집어내는 장치로서, 손상부에 고정하기 위한 제 1 고정부(21)를 갖으며 그 제 1 고정부를 소정범위의 손상부에 고정하여 끌어올리는 제 1 풀러(2)와, 손상부에 고정하기 위한 제 2 고정부(31)를 가지며 그 제 2 고정부를 상기 제 1 풀러의 인상대상이 되는 패널면의 손상부 중 더 국부에 고정하여 끌어을리는 제 2 풀러(3)를 구비한다.
Patent KR-20010113909-A (KR)
Title: Copper alloy with improved resistance to cracking
IPC: C22F1/00
Filed: 2000-03-28
Abstract: A copper alloy having improved resistance to cracking due to localized plastic deformation and the process of making it. The alloy consists essentially of: from 0.7 to 3.5 weight percent nickel; from 0.2 to 1 weight percent silicon; from 0.05 to 1 weight percent tin; from 0.26 to 1 weight percent iron; and the balance copper and unavoidable impurities. The copper alloy has a local ductility index of greater than 0.7 and a tensile elongation exceeding 5 %. Cobalt may be substituted for iron, in whole or in part, on a 1:1 basis by weight. The alloy is precipitation hardenable and useful for electronic applications, including without limitation, connectors. <IMAGE>
Patent KR-20020010659-A (KR)
IPC: B01J23/88
Filed: 2000-05-18
Abstract: 본 발명은 반응에서 사용한 적어도 몰리브덴, A 원소(A는 인 및 비소로 이루어진 그룹으로부터 선택된 하나 이상의 원소) 및 X 원소(X는 칼륨, 루비듐 및 세슘으로 이루어진 그룹으로부터 선택된 하나 이상의 원소)를 함유하는 촉매를 효과적으로 활용하기 위해, 반응에 사용하는 촉매를 물에 분산하고 알칼리 금속 화합물 및/또는 암모니아수를 가한 다음, 이의 혼합액의 pH를 6.5 이하로 조정하여 침전시킨 적어도 몰리브덴 및 A 원소를 함유하는 침전물을 촉매 구성 원소의 원료로 하여 촉매를 제조하는 방법에 관한 것이다.
Patent KR-20030058858-A (KR)
Inventor: KIM JIN MAN
IPC: C07F19/00
Filed: 2002-01-02
Abstract: PURPOSE: A process for preparing pyrithione salt is provided, thereby simply preparing pyrithione salt in higher yield and purity. CONSTITUTION: A process for preparing pyrithione salt of the formula 1 comprises the steps of: (a) oxidation reacting 2-halopyridine of the formula 2 with a monopersulfate containing compound in solvent to prepare 2-halopyridine-N-oxide of the formula 3; (b) mercapto reacting the 2-halopyridine-N-oxide of the formula 3 with sulfide salt in the presence of base to prepare 2-mercaptopyridine-N-oxide of the formula 4; and (c) reacting the 2-mercaptopyridine-N-oxide of the formula 4 with metal salt in the presence of base, wherein M is Cu or Zn; X is halogen atom; and A is H, Na or K.
Patent KR-20020059573-A (KR)
Title: Alphabet input device and method in keypad
Inventor: KIM MIN KYOUM
IPC: H04M1/23
Filed: 2002-01-07
Abstract: PURPOSE: An apparatus for inputting alphabets on a keypad and a method therefor are provided to conveniently input the alphabets on the keypad. CONSTITUTION: Various functions are selected by more alternate combinations of buttons on which vowel elements 'eu' and 'i' are arranged of a line shape of Hangul. The more alternate combinations of buttons on which vowel elements of a dot shape of Hangul are arranged are performed for inputting various functions. Alphabets with the most use frequency are designated representative alphabets of each group among a plurality of alphabets arranged on each button.
Patent KR-20030062085-A (KR)
Title: door closing equipment of chamber for semiconductor device fabricating
Inventor: YOON SEOK WON
IPC: H01L21/00
Filed: 2002-01-16
Abstract: PURPOSE: An apparatus for switching a door of a chamber for fabricating a semiconductor device is provided to prevent a wafer or each constitution element of a chamber from being contaminated while performing a stable process by reducing or preventing generation of vibration caused by collision with a gate. CONSTITUTION: A gate(12) through which a wafer can be inputted and outputted is formed in a side of a housing(10), having a space of a predetermined size. A buffer unit(18) of an extending protrusion type absorbs the vibration, installed in the circumference of the gate in the outer direction of the housing. The door(14) selectively blocks the gate from the outside of the housing.
Patent KR-20030062803-A (KR)
Title: An apparatus for eliminating label of glass bottle
Inventor: JUNG MAN YONG
IPC: B65C9/18
Filed: 2002-01-19
Abstract: PURPOSE: A device for removing label of a waste glass product fast and easily is provided reducing recycling cost, thereby improving recycling value. CONSTITUTION: A label removing device of glass product is composed of an incinerator formed in a tunnel shape having a heating member in the inlet. A conveyor unit(20) is loaded with waste glass bottle to pass the inside of the incinerator. A cooling unit(30) is installed in the outlet side of the incinerator to inject cool air. A discharge unit(40) is connected to the inlet side of the incinerator to discharge foreign material to outside while burning. A shock preventing liquid coating unit(50) is arranged in a front of the incinerator to coat heat impact preventing liquid to the glass bottle.
Patent KR-20030064973-A (KR)
IPC: H02K9/06
Filed: 2002-01-29
Abstract: 고출력·고효율을 실현할 수 있고 소음을 감소시킬 수 있는 차량용 교류발전기에 관한 것으로써, 다상고정자권선(16)은 긴소선(30)이 고정자철심(15)의 단면측의 슬롯(15a)의 밖에서 꺽어 접어지고, 슬롯(15a)의 깊이방향으로 내층과 외층을 교호되게 되도록 권장하고, 고정자철심(15)의 단면측 슬롯 밖에서 꺽어 접어진 소선(30)의 턴부(30a)는 동일형으로 둘레방향으로 동등피치로 배열된 코일엔드군 (16a,16b)을 구성하고, 코일엔드군(16a,16b)은 경방향으로 복수열 배치되어 코일엔드군(16a,16b)에 대향되는 회전자(7)의 축방향의 단부에 설치된 팬(5)에 의하여 발생하는 경방향으로 흐르는 냉각풍(D)이 코일엔드군(16a,16b)을 통풍시키는 것이다.
Patent KR-20030066981-A (KR)
Title: Combined Radio and Cooking Microwave Oven and The Same Control Method
Inventor: JUN DAE YONG
IPC: F24C7/08
Filed: 2002-02-06
Abstract: PURPOSE: A combined radio and microwave oven and a method for controlling operation of the same are provided to reduce costs by coupling only the radio circuit to the control unit of microwave oven, while achieving improved use convenience. CONSTITUTION: A combined radio and microwave oven comprises a control unit(5) for performing a cooking function and controlling a power of a radio in accordance with the execution of cooking function; a radio circuit(30) connected to the control unit; an operating unit(20) for turning on/off the radio circuit, which performs a combined radio operating and cooking function; and a speaker(31) for outputting voice signals generated from the radio circuit. A method comprises the steps of judging whether a user has selected the function other than the radio function; turning off the radio and performing a cooking function if the function other than the radio function has selected; and performing a radio function if the radio function has selected.
Patent KR-20030067390-A (KR)
Title: Low frequency gas Fever conductor system (be) poulticing mild pillow
Inventor: CHO HYUN GYU
IPC: A47G9/10
Filed: 2002-02-08
Abstract: PURPOSE: A poultice pillow having low frequency and gas-thermal conductive material is provided to simultaneously conduct hot physical treatment and low-frequency physical treatment and to be controlled by its height to give more comfortable use. CONSTITUTION: The pillow(100) having S shape corresponding to structure and shape of human body comprises a heat generation part having a crumpled tube type heat generation part(11); a number of low-frequency generation electrodes(16) under bottom of the heat generation part(11); and top end(30) having elastic material at one side of the pillow(100) body to isolate/connect it to the pillow body. The top end(30) has a center portion(30a) and both side portions(30b) having different heights. A controller(20) is outside the pillow to control entire performances of the pillow.
Patent KR-20020029658-A (KR)
Inventor: SON YOUNG SUK
IPC: A43B13/14
Filed: 2002-02-14
Abstract: PURPOSE: Shoes installed with a separable spring is provided to devise the exercise of the bottom of the user's foot by using the elastic force of a spring installed at the bottom sole of the shoes. CONSTITUTION: The shoes for devising the exercise of the bottom of the user's foot are provided with a spring(7) interposed between an out sole(1) of the shoes and a spring mount sole(5). For fastening the spring mount sole in which a separable spring is installed onto a spring fixing part(3) formed in the body of shoes, firstly, one end portion(7) of the spring is disposed on a spring fixing frame(6), and then is fastened by using a spring fixing clamp(8) and a screw.
Patent KR-20030026198-A (KR)
Inventor: AIKAWA TADAO
IPC: G01N21/64
Filed: 2002-02-22
Abstract: PURPOSE: To provide an associative memory circuit in which high speed search operation can be performed even if the number of memory cells connected to a match line are increased. CONSTITUTION: This associative memory circuit has logic circuits Q1-Q4 in which storage contents of memory cells 101, 102, etc., are compared with retrieved data inputted from the outside and the compared result is outputted to a match line, and logic circuits of a plurality of memory cells are connected to a common match line. As the circuit has a reference potential generating circuit 22 provided for each match line and generating a reference potential, and a differential amplifier circuit 20 amplifying the difference between a potential of the match line and the reference potential and discriminating the coincidence or uncoincidence of storage contents of a plurality of memory cells and retrieved data, even if the number of memory cells connected to the match line are increased, loads of the match line are increased, and transition speed is reduced, high speed search operation can be performed.
Patent KR-20030070486-A (KR)
Title: The mouth mugwort moxacayterier
Inventor: GO WUN MAM
IPC: A61H39/06
Filed: 2002-02-25
Abstract: PURPOSE: A moxa treatment tool for use in the mouth is provided to prevent various diseases related with the mouth, nose and bronchus, to restrict desire of smoking, and to destroy various bacteria. CONSTITUTION: The moxa treatment tool for use in the mouth comprises a filter portion(100) having a certain length for allowing the user to bite with his/her mouth, the filter portion functioning to filter various harmful components, a connection pipe(200) extending from one end of the filter and formed with a guide groove(210) therein, and a tobacco portion(300) inserted into the guide groove while coming into contact with the filter portion. The tobacco portion is wholly made of a wormwood(310) and formed with pores(320).
Patent KR-20030001223-A (KR)
Title: Flexible bar for division of median line
Inventor: CHOI CHANG GYU
IPC: E01F15/00
Filed: 2002-03-05
Abstract: PURPOSE: A resilient bar for dividing a center line area on road is provided to allow the bar to be flexibly bent against external impact and to have excellent recovery ability to original state by comprising resilient components such as elastic string and auxiliary elastic part. CONSTITUTION: The resilient bar comprises an upper bar(50), a base plate(30) fitted in lower side of the upper bar, a projection trim(33) having a curved side at center side of the base plate and extending upward, a high-brightness reflective tape(65), a circular bottom bar(40) formed at inner center of the projection trim(33), a number of hooked parts(46) along upper outside of a body(42), an insertion part(44) between the hooked parts. The base plate(30) has a plurality of bolt holes(31) coupled to surface of a road by way of bolt(25). Underside of each hooked part(46), an insertion groove(48) is formed to accept a spring(70). An elastic string(60) such as rubber strand or spring is connected up/down between the upper bar(50) and the base plate(30).
Patent KR-20030069014-A (KR)
IPC: A45D31/00
Filed: 2002-04-01
Abstract: 본 발명은 복수매의 모조손톱에 동시에 그림과 모양을 그려 나갈 수 있고, 각 손톱용 모조손톱의 색조의 균일화와, 그림, 모양의 통일성을 얻기 쉬워서, 능률적이면서 정밀하게 그려 넣는 작업을 행하는 것이 가능한 모조손톱 지지대를 제공한다. 
     본 발명에 따른 모조손톱 지지대는 원판을 반경방향으로 복수로 분할한 형태의 섹터(Sector) 형상을 가지고 각 측변의 결합부(2)에 의해 원판형상으로 연결자재로 된 복수의 좌대(1)를 구비하고, 이들 좌대(1)의 윗면에 모조손톱(3)을 거치·고정하기 위한 모조손톱 거치용 돌출부(4)를 가지는 것을 특징으로 한다.
Patent KR-20030079420-A (KR)
Title: Apparatus for reading in radio frequency identification
Inventor: LEE IN OK
IPC: G06K17/00
Filed: 2002-04-04
Abstract: PURPOSE: An RF-ID(Radio Frequency Identification) reader is provided to read data stored at an RF tag, to convert the read data into the data computable at a PC, and to transmit the converted data to the PC. CONSTITUTION: The reader comprises an antenna(121), a reader(122), a serial communication module(123), and a signal converter(124). The antenna(121) receives the data stored at the RF tag over an RF field. The reader(122) reads the read tag data. The serial communication module(123) converts the read data into serial data. The signal converter(124) converts the serial data into the data computable at the PC. The reader can be inserted into a PCMCIA(Personal Computer Memory Card International Association) type slot of a PDA so that it can enhance a usability.
Patent KR-20030080884-A (KR)
Title: Slide type radiotelephone
Inventor: LIM JONG HO
IPC: H04M1/02
Filed: 2002-04-11
Abstract: PURPOSE: A slide type mobile phone is provided so that a button portion slides and a screen of a display unit is changed from a small screen to an expanding screen. CONSTITUTION: A body(100) has a display unit(110) which is classified as a large screen formed over the half of a mobile phone size and a small screen formed about 1/3 size of the large screen. A button portion(200), which is combined with the body(100) at its lower surface, covers the body(100) so that the button portion(200) slides on the display unit(110) of the body(100). The button portion(200) has an extending portion(201), which is extended at both sides, at its upper end. When the button portion(200) is not used, the display unit(110) is formed as the small screen by the length of the extending portion(201). When the button portion(200) is used, the extending portion(201) is maximally opened and the display unit(110) is formed as the large screen.
Patent KR-20020081132-A (KR)
Title: Spherical carbons and method for preparing the same
Inventor: KIM MYEONG HWAN
IPC: C01B31/02
Filed: 2002-04-17
Abstract: PURPOSE: A spherical carbon having particle size of several to tens of microns, a large apparent density and a small specific surface area which can be used as an anode active material for lithium secondary batteries is provided, and a method for preparing the spherical carbon is provided. CONSTITUTION: The method for preparing spherical carbon comprises the step of heat treating a mixture of carbon precursor and dispersive medium, wherein the carbon precursor is selected from resin, pitch and a mixture thereof, the resin is one or more resins selected from the group consisting of thermosetting synthetic resin comprising phenol resin, furan resin, epoxy resin, polyacrylonitrile resin, polyimide resin, polybenzimidazole resin, polyphenylene resin and bisphenol resin, divinylbenzene styrene copolymer, and cellulose, the pitch is petroleum based pitch or coal based pitch, the dispersive medium is hydrophobic inorganic material, or silicon oil, the hydrophobic inorganic material is silica, zeolite, alumina, titania, or ceria the surface of which is hydrophobic treated. The method for preparing spherical non-graphitizable carbons comprises step a) of carbonizing the mixture by heat treating a mixture containing carbon precursor, and disperse medium of hydrophobic inorganic material to a temperature of 700 to 1500 deg.C in an inert gas atmosphere; and step b) of removing inorganic material by adding acid or alkali solvent to carbides of the step a). The method for preparing spherical graphitized mesocarbon microbeads comprises step a) of heat treating a mixture of carbon precursor and disperse medium; and step b) of heat treating the heat treated spherical carbon precursor or spherical carbon to a temperature of 2000 to 3200 deg.C. The spherical non-graphitizable carbons comprise 10 wt.% of spherical particles satisfying the following mathematical expression 1:£Mathematical Expression 1| 0.99<=a/b<=1, where a is short diameter of particle, and b is long diameter of the particle.